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Find all solutions to the equation x^2 - 7x = 38. If you find more than one, then list the values separated by commas.

 Jun 24, 2021
 #1
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x^2  -  7x   =  38 

 

x^2  - 7x  - 38  =  0   

 

Using the Q  formula

 

x1  =      (  7  - sqrt  [ 7^2  -  4 (-38)  ]  )  /  2    =    ( 7 - sqrt  [ 201 ] ) / 2   ≈   -3.59

And

x2 =  ( 7 +  sqrt [201] )   / 2    ≈   10.59

 

 

cool cool cool

 Jun 24, 2021

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